I haggle and low-ball everything.
It is something that sellers should be aware of. Think of it like getting a job, but you are coming from a hiring manager's perspective. You want that employee at the lowest possible cost, so with jobs, unless the pay is really good when it is low-balled, you always negotiate up as the future employee.
The better the worker, the better the starting low-ball wage is.
I think that people should understand that as a buyer, I go to CL to avoid eBay prices. If something is worth $1500 on eBay, I am not going to give you $1500.
The low-ball is the start of negotiating.
For example, there is a Street Fighter 2:CE cab I am looking at in CL right now. From the pictures, it appears to be in decent shape. The dude is asking $550. No, that is not a bad price, but unless it is filled with awesome or some game that is very amazing or you can tell extra work has been done to it, then I personally refuse to pay over $450 for a cab (maybe that is why I only have 2, but whatever). I offered the dude $400. For a working SF2:CE, that seems very reasonable.
I say instead of just ignoring low-ballers, I say start negotiations. I mean, you guys know how much this stuff is worth more than me, but we all need to accept lower than we want if it is on CL. I see CL as a massive garage sale. You never know what will be on there.
I am just saying that if you put something on CL, based on my experience with it, never expect to get what you want. If you do, then you might as well throw it on eBay instead with local pickup being the only shipping option.
I mean, you guys know how much this stuff is worth more than me, so if you get low-balled too much knowing something is worth more than anybody is offering, than maybe CL is not the best place to sell it